At least 70 people have been killed and thousands more evacuated as floods caused by heavy rain brought chaos to the Philippines. At least one town is completely under water. Power has been cut off to parts of the capital, Manila, where hundreds of people are trapped on rooftops. The government has declared a calamity, allowing access to emergency funds. The equivalent of a whole month's rain fell in six hours as Tropical Storm Ketsana, also known as Ondoy, lashed the island of Luzon, causing the worst flooding in Manila for 20 years. Tropical Storm Ketsana, with winds of up to 100 kilometres per hour, is still over Luzon, and is expected to head out over the South China Sea today or tomorrow.